Reading is delivering of information process where the author tells the readers about his ideas or messages. The students need an interesting media in reading a text. One way for teaching students in reading ability is using booktrack application. Hence many students find it can help them to read the narrative text everywhere. This study aims to describe the implementation of teaching reading narrative text by using booktrack application to the tenth grade students of SMA MUHAMMADIYAH 3 TULANGAN, and the students behaviour and cognitive score after using Booktrack Application media in reading narrative text. Booktrack is smart technology built in that matches an individual’s reading speed on e-reader device or computer (Buffington, 2014). This study used descriptive qualitative research. The subject was X MIPA 4 students at SMA MUHAMMADIYAH 3 TULANGAN consisted 35 students. The researcher was as the observer and conducted observation in two meetings. The data collected by the researcher by observation fieldnote, draft of interview, students worksheet and behaviour scale. The observer observed all the activities in lesson plan to be implemented in the classroom by using observation fieldnote. From the students assignment, it is found that 40% students can do the students assignment well. From the students behaviour scale, it is found that 94% students use their smartphone for study and 77% the students have a good responsibility during the lesson. The result of interview showed that teaching using Booktrack applicationis easy and there is no trouble. Therefore, it can be concluded that the booktrack application is a good media in teaching reading narrative text.